<template>
  <div :class="className" :style="{ height: height, width: width }" />
</template>

<script>
import echarts from "echarts";
require("echarts/theme/macarons"); // echarts theme
import resize from "./mixins/resize";

const animationDuration = 6000;

export default {
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: "chart",
    },
    width: {
      type: String,
      default: "100%",
    },
    height: {
      type: String,
      default: "300px",
    },
    xAxisData: {
      type: Array,
    },
    seriesData: {
      type: Array,
    },
  },
  data() {
    return {
      chart: null,
    };
  },
  watch: {
    xAxisData: {
      handler(newVal, oldVal) {
        this.initChart(); //处理数据
      },
      //immediate: true, // //immediate:true代表如果在 wacth 里声明了之后，就会立即先去执行里面的handler方法，如果为 false，不会在绑定的时候就执行。
      deep: true, //默认值是 false，代表是否深度监听
    },
  },
  // mounted() {
  //   this.$nextTick(() => {
  //     this.initChart();
  //   });
  // },

  beforeDestroy() {
    if (!this.chart) {
      return;
    }
    this.chart.dispose();
    this.chart = null;
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el, "macarons");
      this.chart.setOption({
        tooltip: {
          trigger: "axis",
          axisPointer: {
            // 坐标轴指示器，坐标轴触发有效
            type: "shadow", // 默认为直线，可选为：'line' | 'shadow'
          },
        },
        grid: {
          top: 10,
          left: "2%",
          right: "2%",
          bottom: "3%",
          containLabel: true,
        },
        xAxis: [
          {
            type: "category",
            data: this.xAxisData,
            axisTick: {
              alignWithLabel: true,
            },
          },
        ],
        yAxis: [
          {
            type: "value",
            axisTick: {
              show: false,
            },
          },
        ],
        series: [
          {
            name: "数量",
            type: "bar",
            stack: "vistors",
            barWidth: "60%",
            data: this.seriesData,
            animationDuration,
          },
        ],
      });
    },
  },
};
</script>
